Human Support and
Locomotion:
Notes
Human Support and Locomotion:
1
, 3 types of skeletons:
Hydrostatic Jelly like body
Exoskeleton Hard exterior
Endoskeleton Skeleton inside body
Functions:
o Locomotion: movement
o Support: structure
o Protection: organs
Axial: Appendicular:
Skull Pectoral girdle
Vertebral column Pelvic girdle
Rib cage Leg & arm bones
Skull
Cranium of 8 fused bones and the facial skeleton
Protects brain
Bones fuse at lines called ‘sutures’
Base of brain: foremen magnum
2 large ridges: occipital condyles, first vertebra
The atlas: allow nodding
Rib cage: (12)
Articulate with vertebral column and sternum
- 1st 3: sternum by cartilage
- 2nd 3: connected to cartilage of preceding ribs
- 1st 2: floating ribs
Light, flexible and protective
Intercostal muscles + diaphragm movement help breathing
Vertebral column:
33 small bones separated by cartilage discs
‘S’ shaped curve (flexibility and support)
2
Locomotion:
Notes
Human Support and Locomotion:
1
, 3 types of skeletons:
Hydrostatic Jelly like body
Exoskeleton Hard exterior
Endoskeleton Skeleton inside body
Functions:
o Locomotion: movement
o Support: structure
o Protection: organs
Axial: Appendicular:
Skull Pectoral girdle
Vertebral column Pelvic girdle
Rib cage Leg & arm bones
Skull
Cranium of 8 fused bones and the facial skeleton
Protects brain
Bones fuse at lines called ‘sutures’
Base of brain: foremen magnum
2 large ridges: occipital condyles, first vertebra
The atlas: allow nodding
Rib cage: (12)
Articulate with vertebral column and sternum
- 1st 3: sternum by cartilage
- 2nd 3: connected to cartilage of preceding ribs
- 1st 2: floating ribs
Light, flexible and protective
Intercostal muscles + diaphragm movement help breathing
Vertebral column:
33 small bones separated by cartilage discs
‘S’ shaped curve (flexibility and support)
2
